hg: jdk/sandbox: 8228352: CANON_EQ breaks when pattern contains supplementary codepoint

[chris.hegarty at oracle.com]

Changeset: 67e58672c503
Author:    igerasim
Date:      2019-08-01 07:14 -0700
URL:       https://hg.openjdk.java.net/jdk/sandbox/rev/67e58672c503

8228352: CANON_EQ breaks when pattern contains supplementary codepoint
Reviewed-by: naoto

! src/java.base/share/classes/java/util/regex/Pattern.java
! test/jdk/java/util/regex/RegExTest.java